function [BEtop] = BETOP(B1bot)
%
% E-Layer Top Thickness
%
%DESCRIPTION:
%This function computes the E-Layer Top Thickness.
%
%PROTOTYPE:
% [BEtop] = BETOP(B1Bot)
%
%--------------------------------------------------------------------------
% INPUTS:
%   B1top      [1x1]       F1-Layer Bottom Thick.   [km]
%--------------------------------------------------------------------------
% OUTPUTS:
%   BEtop      [1x1]       E-Layer Top Thickness    [km]
%--------------------------------------------------------------------------
%
%NOTES:
% (none)
%
%CALLED FUNCTIONS:
% (none)
%
%UPDATES:
% (none)
%
%REFERENCES:
% [1] "Ionospheric Correction Algorithm for Galileo Single-Frequency Users"
%      - European GNSS (Galileo) Open Service
% [2] "Electron Density Models and Data for Transionospheric Radio
%      Propagation" - Report ITU-R P.2297-1 (05/2019)
%
%AUTHOR(s):
%Luigi De Maria, Matteo D'Addazio, 2022
%

%% Main Code

BEtop = max(B1bot, 7);

end